.drop-zone {
  width: 300px;
  height: 200px;
  border: 2px dashed #ccc;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.3s;
}

.drop-zone.dragging {
  border-color: #000;
}

.drop-zone input[type="file"] {
  display: none;
}